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Crowdstrike Discussions

Exam CCFA topic 1 question 128 discussion

Actual exam question from CrowdStrike's CCFA
Question #: 128
Topic #: 1
[All CCFA Questions]

When creating a custom IOA for a specific domain, which syntax would be best for detecting or preventing on all subdomains as well?

  • A. .*\.baddomain\.xyz|baddomain\.xyz
  • B. **baddomain\.xyz|baddomain\.xyz**
  • C. .*baddomain\.xyz|baddomain\.xyz.*
  • D. Custom IOA rules cannot be created for domains
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by Brian9296 at Nov. 28, 2023, 8:51 a.m.

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Muffen
2 weeks, 3 days ago
Selected Answer: A
Disagree with Brian. C is not specific enough and would match things like notabaddomain.xyz and baddomain.xyz.com A is the best solution for specifically looking for subdomains of baddomain.xyz or just the domain itself which is what the question asked for.
upvoted 1 times
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Brian9296
5 months, 1 week ago
Selected Answer: C
Tested in UI
upvoted 2 times
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C (25%)
B (20%)
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